Research advances of vegetable oil based pressure sensitive adhesives

Pressure sensitive adhesive (PSA) is a kind of viscoelastic material with viscous properties of liquid and elastic properties of solid, which can adhere to the surfaces of various substrate only under light pressure without phase change. PSAs derived from petroleum-based materials are generally non-biodegradable and disposable, therefore a large amount of waste is generated from PSA products. Preparation of PSAs using renewable vegetable oil as raw materials is an effective way to reduce dependence on petrochemical resources and environmental pollution. This paper summarized the recent progress of vegetable oil-based PSAs. Vegetable oil based PSAs mainly include epoxy resin, acrylic resin, fatty acid derivatives, polyester and polyurethane according to chemical structure of vegetable oil-based polymers. The design ideas and modification methods of vegetable oil-based PSAs were introduced, including the development of functional vegetable oil monomers and the optimization of polymer structure, so as to provide theory and reference for the design and development of new bio-based PSAs.